Heats of transport in toluene-chlorobenzene-bromobenzene mixtures

Simple item page
dc.contributor.advisorRowley, Richard L.en_US
dc.contributor.committeeMemberLeland, Thomas W.en_US
dc.contributor.committeeMemberMcIntire, Larry V.en_US
dc.creatorVongvanich, Tevinen_US
dc.date.accessioned2018-12-18T21:18:16Zen_US
dc.date.available2018-12-18T21:18:16Zen_US
dc.date.issued1982en_US
dc.description.abstractThe heat of transport is the transport property that characterizes the diffusion thermoeffect or Dufour effect, i.e., it relates the induced heat flux to an isothermal chemi cal potential gradient. It is formally defined as the ratio of heat flux to the mass flux under isothermal conditions. The heat of transport determined in binary liquid mixtures by Rowley and Home [1978] constituted experimental verification of the Onsager heat-mass reciprocal relations. However, an attempt to simultaneously determine the two independent heats of transport in a ternary system by Platt [198] was not completely successful due to coupling of parameters. This work represents the determination of heats of trans port (Q1 and Q2) in ternary liquid systems. The composition and temperature dependence of the two independent heats of transport are determined experimentally. This in turn allows computation of the Onsager coefficients associated with ternary mixtures. The toluene-chlorobenzene-bromobenzene system was chosen because of diffusion data availability. A new experimental cell was designed to provide much more versatility in initial interface creation. Experiments involved measurement of temperature differences between two positions symmetric about the initial sharp diffusional interface as a function of time. Experimental data were fitted to the solution of the energy partial differential equation, which had been solved subject to experimentally imposed boundary conditions by a double perturbation technique, using Q1 and Q2 as adjustable parameters. The problem of coupled parameters was circumvented by using two data sets both at the same mean composition but with different initial composition gradients. The heats of transport in the toluene-chlorobenzene-bromobenzene system were fitted to a polynomial in composition and temperature as were the corresponding Onsager coefficients. The resultant expressions are valid in the range .1^w^<.6 (i=l,2), w^>.1, and 298.15 K<T <38.15 K where w1, w2, and w3 are weight fraction of toluene, chlorobenzene, bromobenzene respectively.en_US
dc.format.digitalOriginreformatted digitalen_US
dc.format.extent153 ppen_US
dc.identifier.callnoTHESIS CH.E. 1982 VONGVANICHen_US
dc.identifier.citationVongvanich, Tevin. "Heats of transport in toluene-chlorobenzene-bromobenzene mixtures." (1982) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/104168">https://hdl.handle.net/1911/104168</a>.en_US
dc.identifier.digitalRICE1795en_US
dc.identifier.urihttps://hdl.handle.net/1911/104168en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.titleHeats of transport in toluene-chlorobenzene-bromobenzene mixturesen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentChemical Engineeringen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Artsen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
RICE1795.pdf
Size:
4.24 MB
Format:
Adobe Portable Document Format
Download
Collections
Rice University Theses and Dissertations